Chains and heterogens:
PDB Chain Sequences:
>3chsA (A:) peivdtcslaspasvcrtkhlhlrcsvdftrrtltgtaaltvqsqednlrslvldtkdlt iekvvingqevkyalgerqsykgspmeislpialsknqeivieisfetspkssalqwltp eqtsgkehpylfsqcqaihcrailpcqdtpsvkltytaevsvpkelvalmsairdgetpd pedpsrkiykfiqkvpipcylialvvgalesrqigprtlvwsekeqveksayefsetesm lkiaedlggpyvwgqydllvlppsfpyggmenpcltfvtptllagdkslsnviaheishs wtgnlvtnktwdhfwlneghtvylerhicgrlfgekfrhfnalggwgelqnsvktfgeth pftklvvdltdidpdvayssvpyekgfallfyleqllggpeiflgflkayvekfsyksit tddwkdflysyfkdkvdvlnqvdwnawlyspglppikpnydmtltnacialsqrwitake ddlnsfnatdlkdlsshqlneflaqtlqraplplghikrmqevynfnainnseirfrwlr lciqskwedaiplalkmateqgrmkftrplfkdlaafdkshdqavrtyqehkasmhpvta mlvgkdlkvd